Steering wheel button control adapter for Mercedes ACV SWC 42SMC005-0

steering wheel adapter for Mercedes C-class (S204) (09/07->01/11), C-class (W204) (03/07->01/11), E-class (S212) (07/09->01/13) and E-class (W212) (03/09->01/13)
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Steering wheel button control adapter for Mercedes ACV SWC 42SMC005-0

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Steering Wheel Control Adapter for Mercedes ACV SWC 42SMC005-0

Retain the original steering wheel radio control functions when replacing the original radio with a non-original unit. Depending on vehicle equipment, feature range, and software of the non-original unit, some functions may be limited or replaced by others. Compare the displayed connectors of the adapter with those in your vehicle to ensure they match visually and technically. Verify whether any of the listed original radios were used in the vehicle. Check the vehicle functions, settings, and steering wheel controls before final installation.

Designed for Vehicles

Mercedes C-class (S204) (09/2007->01/2011) without OEM audio system, connected to 40 Pin Quadlock and +12V constant yellow power Klemme 30 secured from battery, blue antenna remote wire.
Mercedes C-class (W204) (03/2007->01/2011) without OEM audio system, connected to 40 Pin Quadlock and +12V constant yellow power Klemme 30 secured from battery, blue antenna remote wire.
Mercedes E-class (S212) (07/2009->01/2013) without OEM audio system, connected to 40 Pin Quadlock and +12V constant yellow power Klemme 30 secured from battery, blue antenna remote wire.
Mercedes E-class (W212) (03/2009->01/2013) without OEM audio system, connected to 40 Pin Quadlock and +12V constant yellow power Klemme 30 secured from battery, blue antenna remote wire.

CAN Bus Information

Connection: 40 Pin Quadlock Mercedes connector.
Power: +12V constant yellow power Klemme 30 (battery, secured).
Designed for vehicles without OEM audio system.
Antenna remote: blue wire +12V.

Important Additional Information

To fully activate the adapter, an interconnection cable for the specific radio brand is required.

General Installation Instructions

Verification Before Installation

Check all control functions and vehicle settings with the original OEM radio.
Perform OEM unit removal without power.
Check all interface connections without power.

Connection and Wiring Sequence

Perform all settings and configurations without power.
Check the radio connection cable configuration.
Connect the cable according to the aftermarket radio instructions.
Connect other wires as per device instructions.
Connect the main power supply last.
Perform software configuration of the interface according to the instructions in the description and BDA.
Configure the aftermarket radio for SWC functions, camera, hands-free, antenna power, etc.
Test the steering wheel control functions and vehicle communication.

Interface and HU Cable Configuration Change

Make changes without power.
After changes, follow steps 5–8 above.

In Case of Interface or Vehicle System Malfunction

Reinstall the original OEM unit in the vehicle.
Turn on the OEM unit.
Wait for the CAN Bus to sleep.
Check the hardware configuration of the interface.
After the CAN Bus sleeps, follow steps 5–8 above.

When Modifying Connections or Wiring

Modifications should be performed by professionally trained personnel only.
Verify compliance with manufacturer requirements and warranty impact before connection.
Verify functionality by measuring and according to the vehicle's schematic before connection.
Modifications are carried out at your own risk without warranty of functionality.
Modifications are made without warranty for potential damage to the vehicle, device, or interface.
Modifying pre-installed wiring may void the product warranty.